# Sumac (Rhus Coriaria) **Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/sumac-rhus-coriaria **Data Source:** Hermetica Superfoods Ingredient Encyclopedia **Updated:** 2026-03-18 **Evidence Score:** 6 / 10 **Category:** Other **Also Known As:** Rhus coriaria, Sicilian sumac, Tanner's sumac, Elm-leaved sumac, Mediterranean sumac, Syrian sumac, Summaq, Za'atar sumac ## Overview Sumac (Rhus coriaria) contains high concentrations of tannins and gallic acid that provide potent antioxidant and [anti-inflammatory](/ingredients/condition/inflammation) effects. These polyphenolic compounds help reduce [oxidative stress](/ingredients/condition/antioxidant) and may support [cardiovascular health](/ingredients/condition/heart-health) through multiple pathways. ## Health Benefits - Sumac is rich in antioxidants like tannins, which combat [oxidative stress](/ingredients/condition/antioxidant) and protect cells from damage. This reduces the risk of chronic diseases. - It exhibits [anti-inflammatory](/ingredients/condition/inflammation) properties that can alleviate symptoms of arthritis and other inflammatory conditions. - Sumac supports [cardiovascular health](/ingredients/condition/heart-health) by lowering cholesterol levels and improving blood vessel function. - It may aid in weight management by enhancing fat metabolism and reducing appetite. - The spice has [antimicrobial](/ingredients/condition/immune-support) properties that can inhibit the growth of harmful bacteria, supporting immune health. - Sumac can improve [digestive health](/ingredients/condition/gut-health) by promoting the growth of beneficial gut bacteria. - It may help regulate blood sugar levels, reducing the risk of type 2 diabetes by improving [insulin sensitivity](/ingredients/condition/weight-management). ## Mechanism of Action Sumac's tannins and gallic acid scavenge free radicals by donating hydrogen atoms to [reactive oxygen species](/ingredients/condition/antioxidant), breaking oxidative chain reactions. These polyphenols inhibit pro-[inflammatory](/ingredients/condition/inflammation) enzymes like cyclooxygenase and lipoxygenase while activating Nrf2 pathways that upregulate endogenous antioxidant production. The compounds also help regulate lipid [metabolism](/ingredients/condition/weight-management) by inhibiting HMG-CoA reductase activity. ## Clinical Summary Human studies on sumac supplementation are limited but promising. A randomized controlled trial with 41 participants showed 3g daily sumac powder reduced [LDL cholesterol](/ingredients/condition/heart-health) by 12.9% over 3 months. Small studies suggest [anti-inflammatory](/ingredients/condition/inflammation) effects, with one trial showing reduced inflammatory markers in 22 adults after 4 weeks of 500mg sumac extract. Most evidence comes from in vitro and animal studies demonstrating [antioxidant activity](/ingredients/condition/antioxidant). Larger, longer-duration human trials are needed to confirm therapeutic benefits. ## Nutritional Profile - High in vitamin C, supporting [immune function](/ingredients/condition/immune-support). - Contains tannins, which have [antioxidant](/ingredients/condition/antioxidant) effects. - Provides dietary fiber, aiding in [digestion](/ingredients/condition/gut-health). - Low in calories, making it a healthy flavor enhancer. ## Dosage & Preparation Typically used as a spice, sprinkle 1-2 teaspoons over dishes. Consult a healthcare provider before use. ## Safety & Drug Interactions Sumac is generally safe when consumed as a food spice, with no serious adverse effects reported in studies. Some individuals may experience mild gastrointestinal upset or allergic reactions, particularly those sensitive to cashews or mangoes due to botanical relationships. Sumac may enhance the effects of anticoagulant medications due to its polyphenol content, requiring monitoring if used with warfarin or similar drugs. Pregnancy and breastfeeding safety data is insufficient, so avoidance during these periods is recommended. ## Scientific Research Preliminary studies and in vitro research suggest sumac's [antioxidant](/ingredients/condition/antioxidant) and [anti-inflammatory](/ingredients/condition/inflammation) properties. Human trials are limited, warranting further research. ## Historical & Cultural Context Sumac has been used for centuries in Middle Eastern cuisine for its tart flavor and as a medicinal plant in traditional practices. It was historically used by Native Americans for its health benefits. ## Synergistic Combinations Turmeric,Ginger,Garlic ## Frequently Asked Questions ### What is the active ingredient in sumac? The primary active compounds in sumac are tannins, particularly gallotannins and ellagitannins, along with gallic acid. These polyphenolic compounds are responsible for sumac's antioxidant and anti-inflammatory properties. ### How much sumac should I take daily? Studies have used 500mg to 3g of sumac extract or powder daily. Most research showing cardiovascular benefits used 3g daily, while anti-inflammatory studies used 500mg of concentrated extract for 4-8 weeks. ### Does sumac lower cholesterol? Clinical research shows 3g daily sumac powder reduced LDL cholesterol by 12.9% after 3 months in a controlled trial. The tannins appear to inhibit cholesterol synthesis and improve lipid profiles, though more studies are needed. ### Can sumac help with diabetes? Preliminary studies suggest sumac may help regulate blood sugar by inhibiting alpha-glucosidase enzymes that break down carbohydrates. However, human clinical trials specifically measuring anti-diabetic effects are lacking. ### Is sumac safe with blood thinners? Sumac's polyphenols may enhance anticoagulant effects of medications like warfarin, potentially increasing bleeding risk. Consult your healthcare provider before combining sumac supplements with blood-thinning medications and monitor INR levels closely. ### What foods contain sumac naturally, and can I get enough from diet alone? Sumac is primarily used as a dried spice in Middle Eastern and Mediterranean cuisines, found in za'atar blends, sprinkled on hummus, and used to season meats and salads. While culinary amounts provide some antioxidants, the concentrations used in cooking are typically lower than therapeutic supplement doses, so supplementation may be necessary to achieve the levels studied in clinical research. ### Is sumac safe to use during pregnancy and breastfeeding? There is limited clinical research on sumac's safety during pregnancy and breastfeeding, so it is generally recommended to avoid supplemental forms during these periods unless directed by a healthcare provider. Culinary amounts used in food preparation are considered safe, but concentrated extracts should be discussed with a physician before use. ### What does clinical research show about sumac's antioxidant and anti-inflammatory effectiveness? Peer-reviewed studies demonstrate that sumac's polyphenols, particularly tannins, significantly reduce oxidative stress markers and inflammatory cytokines in both in vitro and animal models. However, human clinical trials are still limited in number and sample size, with most evidence coming from traditional use and preliminary research rather than large-scale randomized controlled trials. --- *Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com* *License: CC BY-NC-SA 4.0 — Attribution required. 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